Exposé is a Mac OS X option which tiles all open windows across the desktop. It tiles expanded thumbnail previews of the windows on the desktop. Windows doesn’t really have a comparable option, but you can still add Exposé to Windows Vista, 7 and 8 with the BetterDesktopTool.
BetterDesktopTool is a new software package that integrates OS X tools lacking from Windows. Among those is the Exposé tiled windows. Add BetterDesktopTool to your software library from this CNET page  (be sure to click “Direct Download Link” to avoid CNET pre-installer bloatware). During the setup do not select commercial use, which limits it to a 30 day trial package.
When you have installed the software, open the BetterDesktopTool window below. You’ll need to add a shortcut key for the Show all Windows’ option. Click the keyboard shortcut drop-down list for Show all Windows. Then select a suitable keyboard shortcut such as Ctrl + Tab.
Then open a few software packages. Press the shortcut key to tile the windows as in the shot below. From there you can then select a window to open.
The tiled windows can be displayed as a more regular grid. Then the window previews are more evenly sized. Click the Arrange Windows in a Regular-Grid option, and press the shortcut key.
You can also add shortcut keys that show foreground app windows and the desktop. When you press the shortcut key to show the desktop, open windows are moved from the desktop. A show foreground app window shortcut key will open the selected tiled window.
The BetterDesktopTool is a great software package that effectively adds Mac OS X Exposé to Windows. With it you can you locate windows more effectively, and show the desktop without minimizing open windows.